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(No Model.) 7 3 Sheets-Sheet 1.

. B. AQDOBSON a; W. 1. BRO MILEY. MEGHANISM FOR GRINDING THE TRAVELINGFLATS OF GARDING ENGINES.

N0. 473,187. Patented Apr. 19, 1892.

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(No Model.) 3 Sheets-Sheet 2.

B. A. DOBSON & W. I. BROMILEY. MECHANISM FOR GRINDING THE TRAVELINGFLATS 0P CARDIN-G ENGINES.

No. 473,187. Patented Apr. 19, 1892.

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(NGModeL) 3 Sheets-Sheet 3.

B. A. DOBSON 85 W. I. BROMILEY. MECHANISM FOR GRINDING THE TRAVELINGFLATS 0F GARDING ENGINES.

No. 473,187. Patented Apr; 19, 189 2.

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' UNITED STATES PATENT OFFICE.

BENJAMIN ALFRED D OBSON AND \VILLIAM ISHERl/VOOD BROIWIILEY, OF BOL-TON, ENGLAND, ASSIGNORS TO DOBSON & BARLOIV, OF SAME PLACE.

MECHANISM FOR GRINDING THE TRAVELING FLATS F CARDlNG-ENGINES.

SPECIFICATION forming part of Letters Patent No. 473,187, dated April19, 1892.

Application filed November 13, 1891. Serial No. 411,820. (No model.)Patented in England September 9, 1891, No. 15,264-

To all whom it may concern:

Be it known that we, BENJAMIN ALFRED 'DoBsoN and WILLIAM IsHERWooDBROMI- LEY, both subjects of the Queen of Great Britain, and residentsof Bolton, in the county of Lancaster, England, have invented certainnew and useful Improvements in Mechanism for Grinding the TravelingFlats of Oarding- Engines, (for which we have obtained Letters Patent inGreat Britain, numbered 15,264, bearing date September 9, 1891,) ofwhich the following is a specification.

Our invention relates to improvements in mechanism for grinding thetraveling flats of carding-engines with the wire downward, this beingthe position they occupy when at work upon the card; and the object ofour improvements is to avoid the deflection existing when grinding inthe usual way with ordinary appliances.

We attain this object by the mechanism illustrated on the accompanyingthree sheets of drawings, in which Figure 1 is a side elevation of acardingengine, showing our improved mechanism for grinding the flatsapplied in two different positions. Fig. 2 is a side elevation, and Fig.3 an end elevation, of the said improved mech* anism.

In Fig. 1, a designates the main cylinder; 17, the doffer; c, thelicker-in; d, the bend or side framing; c, the chain of traveling flats,and f f the ordinary slides, which carry the bowl-shaft g and bowls uponwhich the flats travel as they enter upon or leave the flexible bend h.

Our improve-d mechanism for grinding the flats is illustrated by thedetail views, Figs. 2 and 3, and may be applied to the carding engine ineither of the positions shown in Fig. l-namely, at the licker-in end orat the doffer end, as may be most convenient. We will describe it asapplied at thelicker-in end to the slide f, which is fitted in thebracket q, secured to the bend d. Upon the bowl-shaft g is mountedloosely a lever 2', in one arm of which is fitted a slide orintermediate piece j, the upper surface j of which is made, preferably,to the same radius as that of the flexi- 5o ble bend h, and the lowersurface has a finger 7' working upon the curved surface 7a of a dummy orguide it. The dummy or guide is is centered upon a shaft Z, which issupported in an arm of the slide f, the position of which is regulatedby the flexible bend h when applied to an engine of the type specifiedin Letters Patent of the United States granted to us, the said BENJAMINALFRED DoBsoNand WILLIAM IsIIERwo0D BRoMILEY, No. 361,815, and datedApril 26, 1887. On the said shaft Z is also centered a lever m, in whichis supported at one end the grindingroller n, and at the other end issuspended a weight 0 to keep the grinding-roller at up to its work, and,further, the lever m is connected to the short arm of the lever I by acoiled spring 19. At the back of the leverm is a threaded snug orprojection m, in which is fitted a screw 1", the end of which supportsthe dummy or guide is, the weight 0 being suffi- 7o cient tocounterpoise the dummy as well as the grinding-roller. On the arm of theslide f is an inclined surface f which forms a fixed stop for thecorresponding inclined surface 7' on the slide or intermediate piece j.

v In operation the prepared working surface of each flat 6 comes in itsturn upon the prepared surface j' of the intermediate piece j, the backof the flat being in contact with the bowl 8 on the shaft g. The weight0 on the lever m, acting through the screw 1, dummy or guide It, andfinger j presses the surface j of the slide or intermediate piece jupward against the working surface of the fiat. As the flat movesforward its edge engages the projection 3' at the back of the inclinedsurface 7' and so carries with it in its traverse the intermediate piecej and the arm of the lever 2', in which said piece is fitted, and alsoraises the other arm of the lever 1', thereby extending the spring 19.The finger 7' as it travels on the curved surface It, causes thegrinding-roller n to approach or recede from the flat as the lattertravels round the bowls, and so the wire is ground to the bevelrequired. WVhen the flat has passed over and left the surface of thegrinding-roller n, the incline j on the piece j comes into contact wit-hthe fixed incline f thus disengaging the flat and allowing the spring pto return the leverz' and intermediate piece j to their origi nalposition ready for the next fiat.

Having now particularly described and ascertained the nature of our saidinvention and in What manner the same is to be performed, We declarethat what we claim, and desire to secure by Letters Patent of the UnitedStates, 1s

1'. In a traveling-flat carding-engine, the combination, with thegrinding-roller supported in a counterbalanced lever, of the dummy orguide 70, the slide or intermediate piece j, and the lever 2', centeredon the bowlshaft, substantially as herein set forth.

2. The combination, with the grinding-roller and the guide-surface kboth supported and kept to their work by aweighted lever, of the slideor intermediate piece j, one portion of which is prepared to receive theworking" surface of the Hat and another is supported by BENJAMIN ALFREDDODSON. WILLIAM ISIIERWOOD BROMILEY.

iVitnesses:

ROBERT WINDER, SAML. BROMILEY.

